Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteSometimes—but not every locked iPhone can be accessed. Whether police or forensic tools can retrieve data depends on the specific iPhone and iOS version, whether it has been unlocked since its last restart, its passcode protections, and the tool’s supported capabilities. A locked screen alone does not reveal which security state the phone is in.
Can police unlock a locked iPhone?
There is no reliable yes-or-no answer for every iPhone. A passcode activates iOS Data Protection: Apple states that “Data protection is enabled automatically when the user sets an active passcode for the device.” The practical result is that access depends on both the phone’s security state and whether a forensic method supports that model and software version.
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Public statements from forensic-tool vendors are not proof of universal access. Cellebrite publicly claims it can access some locked iPhones in the After First Unlock state, but its service information does not establish support for every iPhone model or iOS release: Cellebrite UFED. Virginia’s Department of Forensic Science has also warned that security enhancements in iOS 18 can impede its ability to access data on compatible iPhones. There is no reliable overall law-enforcement success rate, or current success rate by model and iOS version, established by the sources cited here.
Why AFU and BFU matter
AFU means “After First Unlock”: the iPhone has been unlocked at least once since it started. BFU means “Before First Unlock”: the iPhone has restarted and has not yet been unlocked afterward. The screen can be locked in either state, so seeing a passcode screen does not tell you whether the phone is AFU or BFU.
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| State | What it means | Security implication |
|---|---|---|
| AFU | The phone has been unlocked since its most recent startup. | Apple says files using its default “Complete until first user authentication” protection remain accessible to the operating system until shutdown or reboot. This does not mean every file is available to a forensic tool. |
| BFU | The phone has restarted and has not been unlocked since. | It is more restrictive. Apple says its Automatic Restart feature can move a device from AFU to BFU and purge sensitive security keys and transient data from memory. |
Apple describes the restart behavior in its Platform Security guide. The exact ability to retrieve particular data depends on the device, software, data type, and method; the state labels alone do not establish what an examiner can extract.
What happens if an iPhone reboots while it is locked?
After a reboot, the phone is in BFU until it is unlocked. Apple says iOS 18.1 or later includes Automatic Restart: after a prolonged locked period, the device restarts, transitions from AFU to BFU, and purges sensitive security keys and transient data from memory. Apple’s cited description does not specify a universal number of hours.
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Virginia DFS said in a February 20, 2025 notice that an applicable powered-on iPhone may restart after 72 hours since it was last locked. That figure describes the agency’s stated circumstances; it should not be treated as the exact timing for every iPhone configuration. The agency warned that changes in device state can impede forensic access. Its notice is available at Virginia Department of Forensic Science.
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On October 1, 2026, 404 Media reported on a leaked Magnet Forensics video showing a device called GrayKey Preserve and an Evidence Preservation Mode for GrayKey. In the video, a Magnet employee claims the system captures an iPhone’s AFU state and preserves it despite reboot or power loss. The interface shown reportedly displays the phone’s model and software version, not its data.
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This is a vendor claim shown in a leaked video, not independent validation that data extraction succeeds or a public technical explanation of how the feature works. 404 Media reported that security researcher Jiska Classen could not determine the mechanism from the video and raised clock manipulation or interference with timed data-expiration processes as possibilities. Those are hypotheses, not established facts. The report said Apple and Magnet did not respond to its request for comment. The claim should not be taken as proof that GrayKey Preserve works on every iPhone, iOS version, or data type.
Can police get into an iPhone without the passcode?
Sometimes forensic tools may access data from a locked device without the owner entering the passcode, but public claims do not establish that a tool can bypass passcode protections on any particular phone. Apple’s documentation explains that passcode-protected data is encrypted; vendor claims must be read in light of the device’s state and the tool’s supported combinations. Do not assume that a locked iPhone is either certainly inaccessible or certain to be opened.
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Is data on the iPhone different from data held by Apple?
Yes. Data stored locally on a locked iPhone and records held by an Apple service are separate technical and legal questions. Apple says it has not created a backdoor or master key and provides law enforcement guidance about data it can supply in response to valid legal process. That does not mean Apple can decrypt every item stored locally on a locked device. See Apple’s Government Information Requests guidance for the distinction between available service data and device contents.
What should owners take away?
- A locked screen does not show whether an iPhone is AFU or BFU.
- Restarting changes the security state; Apple documents Automatic Restart for iOS 18.1 or later after a prolonged locked period.
- Forensic-tool capability is conditional and changes over time. A vendor’s claim for some devices is not evidence of support for all models, iOS versions, or data types.
- Device contents and data held by Apple services are not interchangeable; each has distinct technical and legal processes.
This is general information, not legal advice. If you have questions about your obligations or an investigation, consult a lawyer in your jurisdiction.
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